Pickling sludge electric furnace treatment equipment

Abstract

The invention discloses pickling sludge electric furnace treatment equipment which comprises an electric furnace body, a feeder and a feeding pipeline. The feeder comprises an outer cylinder, a first inner cylinder, a lower sealing device and a driving assembly, the first inner cylinder is in a horn mouth shape with a large upper opening and a small lower opening, the first inner cylinder is fixed in the outer cylinder, the lower sealing device is in a conical shape and is located below the first inner cylinder, and the driving assembly is connected with the lower sealing device. The driving assembly drives the lower sealing device to move up and down so as to open and close the first inner cylinder; and a lower opening of the outer cylinder is communicated with the electric furnace body through a feeding pipeline. According to the pickling sludge electric furnace treatment equipment, the first inner cylinder is matched with the conical lower sealing device to achieve closing and opening of the feeding channel, the area above the first inner cylinder can be used for temporarily storing Behr, automatic feeding of the electric furnace body is achieved through the feeder, and the smelting efficiency of metal in pickling sludge is improved.

Description

Technical Field

[0001] The invention relates to the field of metal smelting, and in particular to an electric furnace treatment device for pickling sludge. Background Art

[0002] As the production volume of stainless steel products continues to increase, the sludge generated by stainless steel pickling is also increasing year by year. The amount of stainless steel pickling sludge is about 3-5% of the stainless steel production. Nowadays, stainless steel production enterprises produce pickling sludge at the level of millions of tons each year. Combined with historical stockpiles, the amount of stainless steel pickling is getting bigger and bigger. The content of valuable metals such as Fe, Ni, and Cr in pickling sludge is about 10%. It also contains CaF2, CaO, SiO2, sulfates, nitrates, and acidic substances. It is a hazardous solid waste. If not properly handled, the Cr in the sludge will +6 Various heavy metals will cause great harm to the environment. At present, the treatment method for stainless steel pickling sludge in the existing technology is mainly fixed-point accumulation, and then various methods are used to reduce hexavalent chromium, other heavy metals, sulfates, fluoride salts, nitrates, etc. in the sludge to the national emission standards. There is no unified method or standardized equipment for sludge treatment among various enterprises. Many enterprises use some reduction methods to reduce the metal ions in the pickling sludge into harmless metal salts and then discard them, resulting in waste of various metals. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the prior art lacks equipment capable of smelting metal in stainless steel pickling sludge.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an electric furnace treatment device for pickling sludge, comprising an electric furnace body, a feeder and a feeding pipeline;

[0005] The feeder comprises an outer cylinder, a first inner cylinder, a lower sealer and a driving assembly. The first inner cylinder is in a trumpet shape with a large upper opening and a small lower opening. The first inner cylinder is fixed inside the outer cylinder. The lower sealer is conical and located below the first inner cylinder. The driving assembly drives the lower sealer to move up and down to open and close the first inner cylinder. The lower opening of the outer cylinder is connected to the electric furnace body through a feeding pipe.

[0006] The pickling sludge electric furnace treatment equipment of the present invention is mainly used for smelting metals in stainless steel pickling sludge. The specific method is to first dry the stainless steel pickling sludge, and then use carbon powder and other reducing agents to perform high-temperature reduction treatment on the pickling sludge to convert various metal elements in the pickling sludge into metal salts or metal oxides. This mixture containing metal salts and other impurities in the pickling sludge is called Beisha in the industry; finally, Beisha enters the electric furnace body through the feeder and the feeding pipe for smelting. The electric furnace body melts Beisha, separates the liquid metal alloy therein, and then hands it over to the casting equipment to cast alloy ingots for recycling. The feeder in the present invention adopts the first inner cylinder to cooperate with the conical lower sealer to realize the closing and opening of the feeding channel. The area above the first inner cylinder can be used for temporary storage of Beisha. When feeding is needed, the driving component controls the lower sealer to move downward, and Beisha enters the feeding pipe through the lower mouth of the first inner cylinder, and finally flows into the electric furnace body.

[0007] In the present invention, the sand in the electric furnace body will produce a variety of harmful gases during the high-temperature melting process. These harmful gases will be guided to other processing equipment for purification and then discharged into the atmosphere. This means that harmful gases always exist in the electric furnace body of the present invention. When the lower mouth of the first inner cylinder in the feeder is opened for feeding operation, a small amount of harmful gases will escape from the feeder. Although the amount of these escaped harmful gases is very small and will not cause environmental problems, these small amounts of harmful gases have a heavy smell, causing there to always be some unpleasant odors near the pickling sludge electric furnace treatment equipment of the present invention, affecting the working environment and threatening the health of workers. In order to overcome this defect, the feeder of the present invention also includes an air pump, which is connected to the inner cavity of the outer cylinder. When the feeding operation is performed, the air pump starts to continuously fill the outer cylinder with air, forming a local high pressure in the outer cylinder to prevent the harmful gases in the electric furnace body from overflowing through the feeding pipeline.

[0008] Furthermore, the inner wall of the outer cylinder is provided with a nozzle with a nozzle facing downward, and the nozzle is connected to an air pump; when the lower sealer is opened and the feeder feeds material into the feeding pipe, the air pump starts and the nozzle sprays air into the feeding pipe from top to bottom. These airflows directed to the feeding pipe can effectively prevent harmful gases in the feeding pipe from overflowing.

[0009] Specifically, the driving assembly includes a linear driver, a connecting rod, a rotating shaft, a swing arm and a hanging chain. The rotating shaft is installed on the outer wall of the outer cylinder. The connecting rod and the swing arm are fixed on the rotating shaft. The linear driver drives the rotating shaft to rotate through the connecting rod, and the rotating shaft drives the swing arm to swing. The swinging end of the swing arm is inserted into the outer cylinder. The swinging end of the swing arm is installed with a hanging chain, and the bottom end of the hanging chain is connected to the lower sealer; when the swing arm drives the hanging chain upward, the hanging chain pulls the lower sealer upward, so that the lower sealer blocks the first inner cylinder; on the contrary, when the swing arm swings in the opposite direction, the hanging chain and the lower sealer move downward, and the lower mouth of the first inner cylinder opens naturally.

[0010] In the above solution of the present invention, although the air pump sprays air into the feeding pipe to effectively prevent the harmful gas from overflowing, the outer cylinder is always in an open state connected to the outside during the feeding process, and the feeding pipe is not physically isolated from the outside, so some of the harmful gas in the feeding pipe may still overflow. In order to further reduce the overflow of harmful gas, the present invention also provides another technical solution:

[0011] The feeder also includes a second inner cylinder, an upper sealer and a lifting rod. The second inner cylinder has the same structure as the first inner cylinder, is fixed inside the outer cylinder, and is located directly above the first inner cylinder. The upper sealer is located above the second inner cylinder, and the upper end and the lower end of the lifting rod are fixedly connected to the upper sealer and the lower sealer respectively. Two parallel circular plates are arranged on the lifting rod.

[0012] The driving assembly includes a linear drive, a connecting rod, a rotating shaft, a swing arm and a lever. The rotating shaft is installed on the outer wall of the outer cylinder. The connecting rod and the swing arm are fixed on the rotating shaft. The linear drive drives the rotating shaft to rotate through the connecting rod, and the rotating shaft drives the swing arm to swing. The swing end of the swing arm is inserted into the inner part of the outer cylinder. The lever is welded to the swing end of the swing arm, and the lever is inserted into the gap between two parallel circular plates. When the swing arm drives the lever to swing, the lever drives the lifting rod and the upper sealer and the lower sealer fixed on the lifting rod to move up and down.

[0013] The length of the lifting rod meets the condition that the upper sealer seals the second inner cylinder and the lower sealer seals the first inner cylinder. These two states will not appear at the same time; that is, when the lifting rod moves up to the limit position, the lower sealer seals the first inner cylinder; when the lifting rod moves down to the limit position, the upper sealer seals the second inner cylinder. This means that the upper sealer and the lower sealer are interlocking structures. When the lower sealer is opened to add materials, the upper sealer must seal the second inner cylinder. At this time, the inner cavity of the outer cylinder is in a closed state isolated from the outside world. In this state, the inner cavity of the outer cylinder is inflated with air, which can more effectively prevent the harmful gas in the feeding pipeline from overflowing.

[0014] Furthermore, a guide cylinder is arranged inside the outer cylinder, and the lifting rod passes through the guide cylinder, and the guide cylinder is used to ensure that the lifting rod can only perform lifting actions.

[0015] Furthermore, the upper surface of the upper sealer is conical, which is convenient for adding materials into the inner cavity of the outer cylinder.

[0016] Furthermore, the electric furnace body includes a furnace body and an electrode, the electrode is inserted into the furnace body, the furnace body is connected to a feeding pipe, and an alloy outlet and a slag outlet are arranged on the surface of the furnace body. The electrode in the present invention can be a graphite electrode, and a transformer and a short-mesh copper wire are used to input a low-voltage and high-current into the graphite electrode, and an arc is generated after the graphite electrode contacts the Beisha mixture, so that the Beisha mixture undergoes physical and chemical reactions at high temperatures to produce liquid alloy and high-temperature molten harmless waste slag.

[0017] Furthermore, the electric furnace body also includes a lifter, which is installed directly above the furnace body. The lifter drives the electrode to rise and fall in the furnace body. The lifter lifts and lowers the electrode in time according to the actual smelting conditions in the furnace to control the insertion depth of the electrode in the molten pool.

[0018] Specifically, the lifter includes a base, a hydraulic cylinder, a holder and guide wheels, the hydraulic cylinder and the guide wheels are both mounted on the base, the telescopic rod of the hydraulic cylinder is hinged to the holder, the holder is fixedly connected to the tail of the electrode, and the guide wheels are distributed circumferentially around the electrode.

[0019] Beneficial effects: (1) The pickling sludge electric furnace treatment equipment of the present invention utilizes the first inner cylinder in conjunction with the conical lower sealer to realize the closing and opening of the feeding channel. The area above the first inner cylinder can be used to temporarily store sand. The feeder realizes the automatic feeding of the electric furnace body, thereby improving the metal smelting efficiency in the pickling sludge. (2) When the pickling sludge electric furnace treatment equipment of the present invention is performing the feeding operation, the air pump is started to continuously fill the outer cylinder with air, forming a local high air pressure in the outer cylinder, preventing harmful gases in the electric furnace body from overflowing through the feeding pipe, thereby improving the working environment of the workers. (3) The pickling sludge electric furnace treatment equipment of the present invention uses a linked upper sealer and a lower sealer, forming a temporary closed space in the outer cylinder during the feeding operation, physically isolating the feeding pipe from the outside, and more effectively preventing the harmful gases in the feeding pipe from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the pickling sludge electric furnace treatment equipment in Example 1.

[0021] Figure 2 It is a stereoscopic view of the feeder in Example 1.

[0022] Figure 3 This is a cross-sectional view of the feeder in Example 1.

[0023] Figure 4 It is a cross-sectional view of the feeder in Example 1 (another state).

[0024] Figure 5 It is a structural diagram of the electrode and the lifter in Example 1.

[0025] Figure 6 yes Figure 5 A enlarged view of .

[0026] Figure 7 This is a cross-sectional view of the feeder in Example 2.

[0027] Figure 8 It is a cross-sectional view of the feeder in Example 2 (another state).

[0028] Among them: 100, electric furnace body; 110, furnace body; 120, electrode; 130, lifter; 131, base; 132, hydraulic cylinder; 133, holder; 134, guide wheel; 200, feeder; 210, outer cylinder; 211, nozzle; 212, guide cylinder; 220, first inner cylinder; 230, lower sealer; 240, drive assembly; 241, linear drive; 242, connecting rod; 243, rotating shaft; 244, swing arm; 245, lifting chain; 246, lever; 250, second inner cylinder; 260, upper sealer; 270, lifter; 271, round plate; 300, feeding pipe. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with specific implementation modes.

[0030] Example 1

[0031] like Figure 1 As shown, the pickling sludge electric furnace treatment equipment of this embodiment includes an electric furnace body 100, a feeder 200 and a feeding pipeline 300.

[0032] like Figures 2 to 4 As shown, the feeder 200 includes an outer cylinder 210, a first inner cylinder 220, a lower sealer 230 and a driving assembly 240. The first inner cylinder 220 is in a trumpet shape with a large upper opening and a small lower opening. The first inner cylinder 220 is fixed inside the outer cylinder 210. The lower sealer 230 is conical and is located below the first inner cylinder 220. The driving assembly 240 drives the lower sealer 230 to move up and down to open and close the first inner cylinder 220. The lower opening of the outer cylinder 210 is connected to the electric furnace body 100 through the feeding pipe 300.

[0033] The driving assembly 240 includes a linear driver 241, a connecting rod 242, a rotating shaft 243, a swing arm 244 and a hanging chain 245. The linear driver 241 can be a cylinder or a hydraulic mechanism. The rotating shaft 243 is installed on the outer wall of the outer cylinder 210. The connecting rod 242 and the swing arm 244 are both fixed on the rotating shaft 243. The linear driver 241 drives the rotating shaft 243 to rotate through the connecting rod 242, and the rotating shaft 243 drives the swing arm 244 to swing. The swing end of the swing arm 244 is inserted into the inner part of the outer cylinder 210. The swing end of the swing arm 244 is installed with a hanging chain 245. The bottom end of the hanging chain 245 is connected to the lower sealer 230. Figure 3 As shown, when the swing arm 244 drives the chain 245 upward, the chain 245 pulls the lower sealer 230 upward, so that the lower sealer 230 blocks the first inner cylinder 220; on the contrary, Figure 4 As shown, when the swing arm 244 swings in the opposite direction, the hanging chain 245 and the lower sealer 230 move downward, and the lower opening of the first inner cylinder 220 opens naturally.

[0034] The inner wall of the outer cylinder 210 is provided with a nozzle 211 with a nozzle facing downward, and the nozzle 211 is connected to the air pump; when the lower sealer 230 is opened and the feeder 200 feeds material into the feeding pipe 300, the air pump starts, and the nozzle 211 sprays air from top to bottom into the feeding pipe 300. These airflows directed to the feeding pipe 300 can effectively prevent the harmful gases in the feeding pipe 300 from overflowing.

[0035] The electric furnace body 100 includes a furnace body 110, an electrode 120 and a lifter 130. The electrode 120 is inserted into the furnace body 110. The furnace body 110 is connected to the feeding pipe 300. The surface of the furnace body 110 is provided with an alloy outlet and a slag outlet. The electrode 120 in this embodiment is a graphite electrode. A transformer and a short-mesh copper wire are used to input a low-voltage and high-current to the graphite electrode. When the graphite electrode contacts the slag mixture in the furnace body 110, an arc is generated, so that the slag mixture undergoes physical and chemical reactions at high temperatures to produce liquid alloy and high-temperature molten harmless waste slag.

[0036] The lifter 130 is installed directly above the furnace body 110. The lifter 130 drives the electrode 120 to move up and down in the furnace body 110. The lifter 130 timely moves the electrode 120 up and down according to the actual smelting conditions in the furnace, and controls the insertion depth of the electrode 120 in the molten pool. Figure 5 As shown, the lifter 130 includes a base 131, a hydraulic cylinder 132, a holder 133 and a guide wheel 134. The hydraulic cylinder 132 and the guide wheel 134 are both installed on the base 131. The telescopic rod of the hydraulic cylinder 132 is hinged to the holder 133. The holder 133 is fixedly connected to the tail of the electrode 120. The guide wheel 134 is distributed circumferentially around the electrode 120. The telescopic rods of the two hydraulic cylinders 132 can control the lifting and lowering of the electrode 120 by performing telescopic actions.

[0037] The pickling sludge electric furnace treatment equipment of this embodiment is mainly used for smelting metals in stainless steel pickling sludge. The specific method is to first dry the stainless steel pickling sludge, and then use carbon powder and other reducing agents to perform high-temperature reduction treatment on the pickling sludge to convert various metal elements in the pickling sludge into metal salts or metal oxides. This mixture containing metal salts and other impurities in the pickling sludge is called slag in the industry; finally, the slag enters the electric furnace body 100 through the feeder 200 and the feeding pipe 300 for smelting. The electric furnace body 100 melts the slag, separates the liquid metal alloy therein, and then hands it over to the casting equipment to cast alloy ingots for recycling.

[0038] In actual work, the treated sand is put into Figure 3 The outer cylinder 210 of the feeder 200 shown in the figure is temporarily stored, and when feeding is needed, the swing arm 244 is as shown in the figure. Figure 4As shown, the first inner cylinder 220 is swung downward at a certain angle, the lower opening of the first inner cylinder 220 is opened, and the sand naturally falls into the feeding pipe 300 below; during this process, the nozzle 211 sprays air downward to prevent harmful gases below the first inner cylinder 220 from overflowing.

[0039] Example 2

[0040] The pickling sludge electric furnace treatment equipment of this embodiment is basically the same as that of embodiment 1, except that the feeder 200 is Figure 7 As shown, the feeder 200 in this embodiment includes an outer cylinder 210, a first inner cylinder 220, a lower sealer 230, a driving assembly 240, a second inner cylinder 250, an upper sealer 260 and a lifting rod 270. The first inner cylinder 220 is in a trumpet shape with a large upper opening and a small lower opening. The first inner cylinder 220 is fixed inside the outer cylinder 210. The lower sealer 230 is conical and is located below the first inner cylinder 220; the second inner cylinder 250 has the same structure as the first inner cylinder 220, the second inner cylinder 250 is fixed inside the outer cylinder 210, and the second inner cylinder 250 is located directly above the first inner cylinder 220; the upper sealer 260 is located above the second inner cylinder 250, and the upper end and the lower end of the lifting rod 270 are fixedly connected to the upper sealer 260 and the lower sealer 230 respectively; two parallel circular plates 271 are provided on the lifting rod 270.

[0041] The inner wall of the outer cylinder 210 is provided with a nozzle 211 with a nozzle facing downward, and the nozzle 211 is connected to an air pump.

[0042] The driving assembly 240 includes a linear driver 241, a connecting rod 242, a rotating shaft 243, a swing arm 244 and a lever 246. The rotating shaft 243 is mounted on the outer wall of the outer cylinder 210. The connecting rod 242 and the swing arm 244 are both fixed on the rotating shaft 243. The linear driver 241 drives the rotating shaft 243 to rotate through the connecting rod 242. The rotating shaft 243 drives the swing arm 244 to swing. The swing end of the swing arm 244 is inserted into the inner part of the outer cylinder 210. The swing end of the swing arm 244 is welded. The lever 246 is inserted into the gap between the two parallel circular plates 271; when the swing arm 244 drives the lever 246 to swing, the lever 246 drives the lifting rod 270 and the upper sealer 260 and the lower sealer 230 fixed on the lifting rod 270 to move up and down; a guide cylinder 212 is arranged inside the outer cylinder 210, and the lifting rod 270 passes through the guide cylinder 212, and the guide cylinder 212 is used to ensure that the lifting rod 270 can only perform lifting actions.

[0043] The length of the lifting rod 270 satisfies the condition that the two states of the upper sealer 260 sealing the second inner cylinder 250 and the lower sealer 230 sealing the first inner cylinder 220 will not appear at the same time; that is, when the lifting rod 270 moves upward to the extreme position, the lower sealer 230 seals the first inner cylinder 220; when the lifting rod 270 moves downward to the extreme position, the upper sealer 260 seals the second inner cylinder 250.

[0044] The working principle of the feeder 200 of this embodiment is:

[0045] (1) Initially, Figure 7 As shown, the swing arm 244 swings upward to the limit position, and the lever 246 drives the lifting rod 270 to move upward to the limit position. At this time, the lower sealer 230 seals the first inner cylinder 220, but the upper sealer 260 does not seal the second inner cylinder 250;

[0046] (2) The silt-sand mixture is put into the outer cylinder 210, and the silt-sand mixture falls naturally to the area between the second inner cylinder 250 and the first inner cylinder 220;

[0047] (3) Figure 8 As shown, the swing arm 244 swings downward to the extreme position, and the lever 246 drives the lifting rod 270 downward to the extreme position. At this time, the lower sealer 230 opens the first inner cylinder 220, but the upper sealer 260 closes the second inner cylinder 250, and the area below the second inner cylinder 250 is isolated from the outside; the silt mixture in the outer cylinder 210 naturally falls into the feeding channel from the lower mouth of the first inner cylinder 220, and at the same time, the nozzle 211 sprays air downward, and the air pressure in the outer cylinder 210 increases to ensure that the harmful gas in the feeding channel below the first inner cylinder 220 cannot overflow.

[0048] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the protection scope of the present invention. Various omissions, substitutions and changes within the scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A pickling sludge electric furnace treatment equipment, characterized in that: It comprises an electric furnace body (100), a feeder (200) and a feed pipe (300); The feeder (200) comprises an outer cylinder (210), a first inner cylinder (220), a lower sealer (230) and a driving assembly (240); the first inner cylinder (220) is in a trumpet shape with a large upper opening and a small lower opening; the first inner cylinder (220) is fixed inside the outer cylinder (210); the lower sealer (230) is in a conical shape; the lower sealer (230) is located below the first inner cylinder (220); the driving assembly (240) drives the lower sealer (230) to move up and down to open and close the first inner cylinder (220); and the lower opening of the outer cylinder (210) is connected to the electric furnace body (100) through a feeding pipe (300).

2. The pickling sludge electric furnace treatment equipment according to claim 1 is characterized in that: The feeder (200) further comprises an air pump, which is connected to the inner cavity of the outer cylinder (210).

3. The pickling sludge electric furnace treatment equipment according to claim 2 is characterized in that: The inner wall of the outer cylinder (210) is provided with a nozzle (211) with a nozzle facing downward, and the nozzle (211) is connected to an air pump; when the lower sealer (230) is opened and the feeder (200) feeds material into the feeding pipe (300), the air pump is started and the nozzle (211) sprays air into the feeding pipe (300) from top to bottom.

4. The pickling sludge electric furnace treatment equipment according to claim 3 is characterized in that: The driving assembly (240) comprises a linear driver (241), a connecting rod (242), a rotating shaft (243), a swing arm (244) and a hanging chain (245); the rotating shaft (243) is mounted on the outer wall of the outer cylinder (210); the connecting rod (242) and the swing arm (244) are both fixed on the rotating shaft (243); the linear driver (241) drives the rotating shaft (243) to rotate via the connecting rod (242); the rotating shaft (243) drives the swing arm (244) to swing; the swing end of the swing arm (244) is inserted into the inner part of the outer cylinder (210); the hanging chain (245) is mounted on the swing end of the swing arm (244); the bottom end of the hanging chain (245) is connected to the lower sealer (230).

5. The pickling sludge electric furnace treatment equipment according to claim 3 is characterized in that: The feeder (200) further comprises a second inner cylinder (250), an upper sealer (260) and a lifting rod (270); the second inner cylinder (250) has the same structure as the first inner cylinder (220); the second inner cylinder (250) is fixed inside the outer cylinder (210); the second inner cylinder (250) is located directly above the first inner cylinder (220); the upper sealer (260) is located above the second inner cylinder (250); the upper end and the lower end of the lifting rod (270) are fixedly connected to the upper sealer (260) and the lower sealer (230) respectively; and two parallel circular plates (271) are provided on the lifting rod (270); The driving assembly (240) comprises a linear driver (241), a connecting rod (242), a rotating shaft (243), a swing arm (244) and a lever (246); the rotating shaft (243) is mounted on the outer wall of the outer cylinder (210); the connecting rod (242) and the swing arm (244) are both fixed on the rotating shaft (243); the linear driver (241) drives the rotating shaft (243) to rotate via the connecting rod (242); the rotating shaft (243) drives the swing arm (244) to rotate ) swings, the swing end of the swing arm (244) is inserted into the outer cylinder (210), the swing end of the swing arm (244) is welded with a lever (246), and the lever (246) is inserted into the gap between two parallel circular plates (271); when the swing arm (244) drives the lever (246) to swing, the lever (246) drives the lifting rod (270) and the upper sealer (260) and the lower sealer (230) fixed on the lifting rod (270) to move up and down; The length of the lifting rod (270) satisfies the condition that the two states of the upper sealer (260) sealing the second inner cylinder (250) and the lower sealer (230) sealing the first inner cylinder (220) will not occur at the same time.

6. The pickling sludge electric furnace treatment equipment according to claim 5, characterized in that: A guide cylinder (212) is disposed inside the outer cylinder (210), and the lifting rod (270) passes through the guide cylinder (212).

7. The pickling sludge electric furnace treatment equipment according to claim 6, characterized in that: The upper surface of the upper sealer (260) is conical.

8. The pickling sludge electric furnace treatment equipment according to claim 1, characterized in that: The electric furnace body (100) comprises a furnace body (110) and an electrode (120), wherein the electrode (120) is inserted into the furnace body (110), the furnace body (110) is connected to a feeding pipe (300), and an alloy outlet and a slag outlet are arranged on the surface of the furnace body (110).

9. The pickling sludge electric furnace treatment equipment according to claim 8, characterized in that: The electric furnace body (100) further comprises a lifter (130), which is installed directly above the furnace body (110) and drives the electrode (120) to move up and down in the furnace body (110).

10. The pickling sludge electric furnace treatment equipment according to claim 9, characterized in that: The lifter (130) comprises a base (131), a hydraulic cylinder (132), a clamping seat (133) and a guide wheel (134); the hydraulic cylinder (132) and the guide wheel (134) are both mounted on the base (131); a telescopic rod of the hydraulic cylinder (132) is hinged to the clamping seat (133); the clamping seat (133) is fixedly connected to the tail of the electrode (120); and the guide wheel (134) is distributed circumferentially around the electrode (120).

Images